Question

from an external point q the length of the tangent to a circle is 5cm and the distance of q from the centre is 8cm . find the diameter of the circle class 10​

Answer 1

Step-by-step explanation:

It is given that the tangent of circle is 5 cm and distance of Q from the centre is 8 cm.

Since the radius OT is perpendicular to QT, therefore,

OT² =OQ² −QT²

⇒OT² =8² −5²

⇒OT² =64−25

⇒OT² = 39

⇒OT=  $\sqrt{39}$m

Answer 2

Answer:

Hey this maybe helpful to you

Step-by-step explanation:

I find out only radius. For finding out diameter you have to do√39+√39.

Hope it helps you......